The STAKKAbox™ system is a range of polypropylene preformed twin-wall modular access chambers. They have been developed for use in both footway and carriageway installations and are capable of withstanding vertical loads over 40 tonnes without the requirement for any structural support.
The Modula access chamber consists of 155mm deep stacking sections, which can be stacked to form complete chambers of any depth.
The STAKKAbox™ access chamber system has a high strength to weight ratio. This is due to its unique patented twin-wall design with internal vertical and horizontal support ribs. The vertical ribs provide a high degree of vertical compressive strength that resists the loads applied by vehicles passing over, while the continuous horizontal rib offers strong resistance to sidewall loads from vehicle or ground heave.